Daughter, dream big without harming anyone

In a beautiful place in my country, a group of three girls and a boy being one of the girls my 8 year old daughter. They played happily from under a tree.
They played to that some had a store where they sold stones, old pots and other things that occurred to them And other children bought them, The form of payment that they used was to pay with dry leaves of that same tree.
Paying attention I saw that my daughter told her cousin that she no longer had money that she would not buy the stone that she liked because of the lack of a sheet on her waist where she used to put them. Listening to that, I decided to intervene and ask my daughter, why do you have the opportunity? to take more leaves to buy the stone, do not you? She told me that they were not rich and that's why they were limited.
I gathered them around me and told them, if it is a game where everyone is using their imagination, why limit it to such a point of remaining poor and not willing to pretend to be someone who can meet their needs.
They have the opportunities thrown on the ground, they should only detect them work a little and pick them up. Dreaming is free and you always have to do it big that is a gift from GOD.
One of the girls interrupted me and told me then I'll climb the tree and pull out many leaves so I'll be very rich ...! I answered no no no stop that is not right, to tear the green leaves to the tree causes him damage could die and would no longer shade you the same shadow you use to play.
You have to take advantage of opportunities like the leaves that the tree gives you, but without harming anyone and being able to live and enjoy life without feeling guilty or living with remorse.
Dream and dream big without hurting anyone.